Ciesielski, Zbigniew <br/><br/>
Approximation theory  papers presented at the Stefan Banach International Mathematical Center at the 6th semester held on Sept. 17-Dec. 17, 1975 

 - Warszawa  Polish Scientific Publishers  1979 
 - 316p. 
 - Banach Center Publications   v. 4 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>515.73  / C569.AT